CN207349643U - bellows with sealing function - Google Patents
bellows with sealing function Download PDFInfo
- Publication number
- CN207349643U CN207349643U CN201720788395.5U CN201720788395U CN207349643U CN 207349643 U CN207349643 U CN 207349643U CN 201720788395 U CN201720788395 U CN 201720788395U CN 207349643 U CN207349643 U CN 207349643U
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- Prior art keywords
- bellows
- sealing
- connecting tube
- metal
- metal bellows
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The utility model discloses a kind of bellows with sealing function, the metal bellows being fixedly connected including connecting tube and with the connecting tube, and it is fixed at the sealing ring of wavy metal tube end, the length of the metal bellows is in 30 80mm, connecting flange is provided with the middle part of the connecting tube, the other end of the connecting tube is provided with flange.The dock sealing high temperature pipe of the utility model, using metal bellows as connecting and storing power component, connection structure is simple, can effectively bear high temperature, realizes the purpose of rotatory sealing.Using the length of optimization, organically combine its elasticity and length.
Description
Technical field
Photo-thermal electro-technical field is the utility model is related to, more particularly to a kind of bellows with sealing function.
Background technology
The power generation of solar energy paraboloid trough type is to be gathered solar radiation by tracking the linear parabolic mirror of solar motion
Collect and the technology that heat-transfer fluid generates electricity is heated in the endothermic tube at parabola focal line.The key of slot type power station heat collecting field
Equipment mainly includes heat collector, endothermic tube and thermal storage device etc..It is the core of heat collector day by day to drive tracking system, is photo-thermal collection
Device makes full use of the guarantee of solar energy.By driving tracking system, photo-thermal collector can track the sun from sunrise to sunset.Rotation
Adapter is then that thermal-collecting tube is connected an essential part with fixed system pipeline, by using swivel joint, Ke Yiyan
The service life of long connection flexible pipe, reduces the risk that fused salt pipeline leaks.
At present, traditional swivel joint is made of parts such as inner and outer pipes, bearing, sealing ring and elastomers.Swivel joint makes
Used time, first uses screw thread or flanged joint by fixed end and connecting line, then by rotary joint rotating part by housing, axis
Hold, the component such as sealing ring is docked with anchor tip.When swivel joint works, the bearing being fixed between joint body inner and outer pipes can
Realize rotating against for anchor tip and swivel joint, the sealing ring of bearing both sides keeps apart bearing and inner tube working media,
Reach the effect of sealing at the same time, and under the more demanding occasion of sealing performance, elastomer is installed in sealing ring side more
Sealing ring axial force is supplied to, to improve sealing ring frictional force, and then improves sealing performance.But in high temperature, acid and alkali corrosion etc.
In complicated and severe working environment, the heat resistance of each assembly material is different with expansion and contraction so that poor sealing, soda acid sex work
Medium, which enters in bearing, causes clamping stagnation, corrosion and secondary leakage.
Utility model content
The purpose of this utility model is to be directed to technological deficiency existing in the prior art, and providing one kind has sealing function
Bellows.
Technical solution is used by realize the purpose of this utility model：
A kind of bellows with sealing function, including connecting tube and the wavy metal that is fixedly connected with the connecting tube
Pipe, and is fixed at the sealing ring of wavy metal tube end, and the length of the metal bellows is described in 30-80mm
Connecting tube in the middle part of be provided with connecting flange, the other end of the connecting tube is provided with flange.
The sealing ring is corresponding plane, slope surface or cambered surface sealing pair.
Connecting tube is welded with metal bellows, and sealing ring is welded with the metal bellows.
The material of the sealing ring is hard alloy.
The rigidity of metal bellows is more than 100N/mm.
The wall thickness thickness of metal bellows is in 0.6-1mm, and pitch is in 8-12mm.
The wall thickness of metal bellows is 0.8mm, pitch 10mm.
Compared with prior art, the beneficial effects of the utility model are：
The dock sealing high temperature pipe of the utility model, using metal bellows as connecting and storing power component, connects knot
Structure is simple, can effectively bear high temperature, realizes the purpose of rotatory sealing.Using the length of optimization, make its elasticity and the organic knot of length
Close.
Brief description of the drawings
Fig. 1 show the structure diagram of the bellows with sealing function；
Fig. 2 show the structure diagram of the dock swivel joint of the utility model；
Fig. 3 show the reserved notch schematic diagram of the first connector sleeve.
Fig. 4 show sealing ring and docks the first schematic diagram.
Fig. 5 show sealing ring and docks the second schematic diagram.
Fig. 6 show sealing ring and docks the 3rd schematic diagram.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description only to explain the utility model, is not used to limit the utility model.
As shown in the figure, the bellows with sealing function of the utility model include connecting tube 11 and with the connecting tube
11 metal bellows 12 being fixedly connected, and it is fixed at the sealing ring 13 of wavy metal tube end.Wherein, the metal
Bellows material is made of high temperature resistant stainless steel, such as 304H, and the wall thickness thickness of metal bellows is in 0.6-1mm, such as 0.8mm, section
Away from big in 30-80mm, preferably 40-70cm, wavy metal pipe stiffness in 8-12mm, such as 10mm, bulk metal Bellows Length
Belong to elastic deformation in stretching in 100N/mm, range in stiffness, no fatigue influences, and can meet to use for a long time, wavy metal pipe range
Degree is related with decrement needed for calculating, and sealing ring material is hard alloy, and e.g., Si Taili stainless steels, metal bellows is with being connected
Being fixedly connected for pipe is realized using specialty welding.
The bellows with sealing function of the utility model, using metal bellows as connecting and storing power component, even
Connect simple in structure, can effectively bear high temperature, realize the purpose of rotatory sealing.
Specifically, for ease of integrated connection, be provided with the middle part of the connecting tube 11 connecting flange 14 with clamping
Set, the first connector sleeve is fixedly connected as described below, and the outer end of connecting tube is additionally provided with end connecting flange to be connected to
Whole pipeline.There is flange 15 in the end set of connecting tube at the same time, by flanged joint, can guarantee that preferable concentricity.
Wherein, there be part connection pipeline section the inner side of the connecting flange 14, the end of the connection pipeline section on the inside of this and the
One metal bellows is welded, and to strengthen bonding area, the internal diameter at the end is identical with overall connecting tube, and preferably the section selects
The larger design of wall thickness, so also improves assembling, can load centering during connector sleeve now, the design of the second connecting tube with it is such
Seemingly, it is not unfolded to describe herein.
Meanwhile the invention also discloses a kind of dock swivel joint, including the Butt sealing formula described in two is high
Wen Guan, and connector sleeve, the connector sleeve is connected respectively with the connecting tube and the seal ring seal pair described in by two
Connect.
Certain length and the metal wave of rigidity is respectively welded in the fixed end and rotating end joint of swivel joint
Line pipe, and wear-resistant material sealing ring is welded again in the other end of metal bellows, after the completion of swivel joint assembling, sealing ring docking
And bellows is had certain decrement, and then stroke after thermal expansion is efficiently used, there is provided to required axial direction in sealing contact
Pretightning force, at the same the working space of the rotary components such as working media and bearing is independent.That is, directly sealed using pipeline pair
The structure type connect, eliminates dependence of the components such as bearing to sealing performance；Under high-temperature work environment, metal bellows is not
The stroke of pipeline in only absorbable swivel joint, and then increase the decrement of bellows, it is positively utilized under hot environment each
The stroke of assembly material improves sealing performance, more to improve assembling structure, is situated between with eliminating the components such as bearing and working in soda acid
To the dependence of sealing performance in matter.
The utility model, specific embodiment of the utility model will be expanded on further by the description of specific embodiment below
Include including dock swivel joint,
First connector, it includes the first connecting tube 11 and the first metal wave being fixedly connected with first connecting tube 11
Line pipe 12, and the first sealing ring 13 of the first wavy metal tube end is fixed at,
Second connector, it includes the second connecting tube 21 and the second wavy metal being fixedly connected with second connecting tube
Pipe 22, and the second sealing ring 23 of the second wavy metal tube end is fixed at,
The connection sleeve of stainless steel, it includes being fixedly connected with first connecting tube and allows described the
The first connector sleeve 31 that one metal bellows is inserted, is fixedly connected and can with the first connector sleeve with second connecting tube
Second connector sleeve 32 of rotatable connection, second metal bellows through second connector sleeve and make first close between two parties
Seal ring and the docking of the second seal ring seal.First connecting tube and the second connecting tube is the Butt sealing of the utility model
Formula high temperature pipe.
Wherein, it is to ensure overall sealing effect, the pressure of the first sealing ring and the second sealing interannular under room temperature after mounting
Press it is strong larger, generally in 2Mpa or more, when inside stream crosses high-temperature molten salt, during such as 580 DEG C of high-temperature molten salts, two sealing interannulars
Pressure can reach 4Mpa even more than.
The utility model is connected by connecting tube with exterior line, is such as connected with heat storage can circuit or thermal-collecting tube, at the same time
In the fixed setting of the opposite end of two connecting tubes, such as welded joints seal circle, then using connect sleeve by the first connector and
Second connector axially position but it is rotatably connected and two sealing rings is formed with inwardly extruding, utilizes sealing ring extruding to form sealing
The rotary type that connection forms this pipeline is tightly connected.
Further, the sealing ring is corresponding plane, slope surface or cambered surface sealing pair.The i.e. described sealing ring has three
Kind structure：The first is plane sealing structure, that is, contacts sealing surface and dock form for plane；Second is conical surface sealing structure,
It is cone match form to contact sealing surface；The third is ball face sealing structure, that is, contacts sealing surface and match somebody with somebody for convex annular, concave spherical surface
Conjunction form, the obverse design of sealing ring, along with sealing ring after flexible bellow welding with, to neutrality, even more improving
Seal the frictional force and sealing performance of loop interface.
Further, to prevent from gathering in connector sleeve after revealing at sealing, the connection sleeve, such as the first connection
The sealing joint is sleeved on formed with atria 33, the atria is formed with discharge port.Specifically, described first
Connector sleeve includes the reduced diameter section and enlarged diameter section being coaxially disposed, and the enlarged diameter section end is described formed with inner stopper
Second connector sleeve can be rotatably set in the opening of larger diameter end by swivel bearing.
First connector sleeve is designed using reducing type, and the rotatable axis for realizing two connector sleeves using inner stopper is located by connecting,
Specifically, which includes being arranged on the rolling bearing 41 of two connection inner rooms, and bearing neck bush 42, is arranged on the axis of rolling
The bearing external bushing 43 in outside is held, is connected to position the bearing external bushing outer surface outer ring with first connector sleeve
Hole baffle ring 44, and be connected with second connector sleeve to position the axial outer bearing sleeve outer surface inner ring
Shaft block ring 45, using two baffle rings, is effectively ensured stability and resistance to pressure that connector sleeve connects.
Further, for avoid leakage fused salt on bearing form influence, the atria by the first connector sleeve platform
Shoulder and the spacer ring 34 being fixedly connected with the enlarged diameter section are formed, second connector sleeve protrude inwardly from formed with bulge loop
24, the spacer ring is held in bulge loop outer surface.
The independent design of atria is realized using spacer ring using variable diameter design, further reduces fused salt directly to bearing
Corrode, moreover, forming bulge loop corresponding with the spacer ring on the second connector sleeve, the bulge loop and spacer ring form the same of sealing
When, centering is also provided, improves the operational effect of rotary sleeve.
Further, second connector sleeve keeps spacing to reduce CONTACT WITH FRICTION area with the spacer ring, described
The second connector sleeve medial surface on formed with ring groove 25, which reduces the outside transmission of internal heat, meanwhile, also
Can heater be set in the ring groove to reduce the temperature drop of junction.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (7)
1. a kind of bellows with sealing function, its feature exist, including connecting tube and it is fixedly connected with the connecting tube
Metal bellows, and the sealing ring of wavy metal tube end is fixed at, the length of the metal bellows is in 30-
80mm, connecting tube middle part are provided with connecting flange, and the other end of the connecting tube is provided with flange.
2. there is the bellows of sealing function as claimed in claim 1, it is characterised in that the sealing ring is corresponding flat
Face, slope surface or cambered surface sealing pair.
3. there is the bellows of sealing function as claimed in claim 1, it is characterised in that connecting tube is welded with metal bellows
Connect, sealing ring is welded with the metal bellows.
4. there is the bellows of sealing function as claimed in claim 1, it is characterised in that the material of the sealing ring is hard
Matter alloy.
5. there is the bellows of sealing function as claimed in claim 1, it is characterised in that the rigidity of metal bellows is more than
100N/mm。
6. there is the bellows of sealing function as claimed in claim 1, it is characterised in that the wall thickness thickness of metal bellows exists
0.6-1mm, pitch is in 8-12mm.
7. there is the bellows of sealing function as claimed in claim 1, it is characterised in that the wall thickness of metal bellows is
0.8mm, pitch 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788395.5U CN207349643U (en) | 2017-06-30 | 2017-06-30 | bellows with sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788395.5U CN207349643U (en) | 2017-06-30 | 2017-06-30 | bellows with sealing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207349643U true CN207349643U (en) | 2018-05-11 |
Family
ID=62359028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720788395.5U Active CN207349643U (en) | 2017-06-30 | 2017-06-30 | bellows with sealing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207349643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228646A (en) * | 2020-11-03 | 2021-01-15 | 崔如福 | Sealed valve |
-
2017
- 2017-06-30 CN CN201720788395.5U patent/CN207349643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228646A (en) * | 2020-11-03 | 2021-01-15 | 崔如福 | Sealed valve |
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